# perimeter of a circle

Quizzes and games : geometry

Online calculator that calculates the perimeter of a circle from its radius.
perimeter_circle(3). , returns 6pi

Quizzes and games : geometry

### Perimeter circle, online calculus

#### Summary :

Online calculator that calculates the perimeter of a circle from its radius.

perimeter_circle online

#### Description :

The calculator is able to calculate online the perimeter of a circle. The perimeter of a circle is given by the formula 2*pi*r, where r is the radius of the circle. The perimeter of a circle is the length of the circle. The length calculator supports numeric but also literal expressions.

# Calculating the perimeter of a circle

The length calculator is able to calculate the perimeter of a circle, the calculated length is returned in exact form and in approximate form.

Calculation of the perimeter of a circle of radius 3 is done by entering the following formula perimeter_circle(3).

# Symbolic calculation of the perimeter of a circle

The length calculator is able to do symbolic calculations or literal calculation. To calculate, for example, the perimeter of a circle of radius 1+x, enter the following formula perimeter_circle(1+x) ,after calculation the result is returned.

#### Syntax :

perimeter_circle(3). , returns 6pi